Pressure-regulator



Patented Api'. 22,1884.

` F.J.FRBESE.

PRESSURE REGULATOR.

(No Model.)

WITNESSBS: l

/ff/ M UNITED STATES .PATENT OEEICE.

FRANCIS JOSEPH FREESE, OF MANCHESTER, NEW HAMPSHIRE.

PRESSURLREQULATOR.

SPECIFICATION forming part of Letters Patent No. 297,373, dated April 22, 1884.V Application filed August 21, 1883. (No model.)

To @ZZ whom it may concern:

v of my improved pressure-regulator. Fig. 2

vin the enlargement A'.

is a plan view ot' the same.

A cylindrical casing, A, is'provided at its upper end with an enlargement, A', and conj tains a hollow sliding plunger, B, provided at its upper end with an enlargement, B', Iitting A rod, C, extendslongitudinally through the plunger, and is partly surrounded by a gaged spiral spring, D, which rests between a nut, E, screwed on the bottom of the casing, and the bottom cfa channel or duct, F, extending transversely through the plunger at about the middle of` the same. The upper end of the rod is braced by arms a. The rod C projects slightly above the top of the plunger and forms a check by striking against the top cap, G, of the casing, and pre Vents the plunger from being raised too high by the spring D. The casing is provided with a bottom cap, H. The casing is also provided .with two diametrically-opposite necks, J, to which the pipes for conducting the steam, &c.,

are connected. A duct, K, extends from one ot' the necks J to the top of the casing. The steam enters the casing through one of the necks J, passes through the duct F into the other neck, and then passes up through the duct K to the top of the casing, and acts on the head of the enlargement B and thetop partition forming the of the steam, &c., is too great, it presses the. plungerB downward, thereby moving the ends of the duct F below the inner openings oi' the necks J, thus allowing less steam. dac., to pass, and thereby reducing the pressure and duct F. It' the pressdtgg",

permitting the spring D to raise the plunger again, so that ,more steam, Ste., can pass, and so on, the plunger B is raised and lowered and regulates the pressure automatically. The spring D must be gaged according to the desii-ed presso re.

Having thus described my invention, Iclaim as new and desire to secure by Letters Patent- In a pressureregulator for steam, gases, or liquids, tbecombination of the cylindrical casing A. enlarged at A', provided with opposite internally-threaded necksJ J, and having caps G H, the hollow sliding plunger B, enlarged at B' to tit into enlargement A', the rod C, having arms a and a top extension-check extending through the plunger, and provided with a spira-1 spring at the lower end, and the nut E, screwing into the lower end of case, as

shown and described.

FRANCIS JOSEPH FREESE.

Witnesses:

JOHN ON EIL, CHRIS. A. GALLAGHER. 

